[masraum]

Originally Posted by Heel n Toe

AFAIK, the sensor and gauge combo on my E39 work just like your E46. I've been told that the vertical position on the gauge means "fully warmed up and not overheating" and is supposed to make you feel everything's okay. Ugh.

And if it starts climbing beyond that, you better be looking at the gauge to see it.

I hate the whole setup and have wondered why BMW couldn't have put a normal linear readout gauge on these cars. I've often thought I'd like to do the same thing you're doing.

Exactly! Most folks don't understand what they see on the gauges. Dealerships would probably be inundated with calls if temp gauges and pressure gauges read accurately and instantly. Oil pressure gauges would be the worst.